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Full text of "Metallurgy Of Cast Iron"

INDEX.                                           617
Silicon  Continued.                             -                                  PACK.
Percentage required to change the grade of an iron. .150, 155 The influence of, to retard iron absorbing carbon. .205, 208 Its utility to soften, regulate and cheapen mixtures. .207-211 The first to advance the utility of .................. 207, 208
Its power to increase the fluidity and life of molten metal 208 Used as a base for changing the grade of mixtures. .208, 296 Care necessary in using and its evil effects ......... 208, 209
Percentage used  in  light castings .............. 209-21 1, 281
Point at which silicon hardens  iron ........... 209, 281 , 437
The   highest   percentage   permissible   in   soft   castings ........................................... 209, 281 , 283
Causing  brittle  castings ....................... 209, 222, 283
Example of extremely low silicon in light castings .....  209
The amount that can be absorbed by iron ..............  210
The percentage in pig most desirable to use for regulating   mixtures   ......................................  210
The amount of scrap that four per cent silicon pig may carry   ........................................... 211, 279
Its peculiar appearance in fracture ..................... 211
Amount required when total carbon changes in order to keep   a   uniform   hardness ................... 246, 280. 282
Loss of by remelting ...................... 257, 303, 3 r
Low, showing a greater chill on edges of light czisti than  excessive  use  of . . ........................
lags-
Creation   of   ................................. ^2-
Amount of iron in furnace ...............
Denning the grade of iron by color and Action of basic and acid elements in . . . Chemical relation  of iron to  ........ .
Percentage of silica  in ...............
Weight produced in making iron   .....
Methods for disposition  of . . .' ..... ...
Manufacture of mineral wool, from. . .
Percentage of refuse carried off by. .. Plans  used by  furnaces ..............
Loss of iron by, in cupolas .............----147, f 61al  tests  and